International Symposium on
Drylands Ecology and Human Security
From the Micro-topography Organization to Runoff Modeling and to Water Reservoir Management
Jean Duchesne1, Pierre Ozer2, Jean Gassani3
1 Department of Landscape Science, I.N.H., France
2 Department of Environment Sciences and Management, University of Liege, Belgium
3 University of Angers, France
In most theories in hydrology, water which arrives at the river is modeled by the combination of two functions:
The general idea is to develop a new production function topographically-based and without any calibration. As we assume it is possible to build such a production function by taking into account both the infiltration law deduced from measurements and the organization of micro-topography; the latter often (always?) shows a great number of micro-basins which are linked by superficial micro-talwegs which in their turn converge to the hydrographic network by following the general slope.
We first applied these hypotheses in Indonesia, on very small catchments (10 to 60 hectares).